CN217403166U - Converter cyclone dust removal exhaust-heat boiler - Google Patents
Converter cyclone dust removal exhaust-heat boiler Download PDFInfo
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- CN217403166U CN217403166U CN202123366860.1U CN202123366860U CN217403166U CN 217403166 U CN217403166 U CN 217403166U CN 202123366860 U CN202123366860 U CN 202123366860U CN 217403166 U CN217403166 U CN 217403166U
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Abstract
The utility model discloses a converter cyclone dust removal exhaust-heat boiler, take over, outer cyclone, interior cyclone, exhanst gas outlet including the flue gas import and take over, toper ash falling cylinder, deposition section of thick bamboo, top cap, downcomer, tedge and steam pocket. The integral structure of the high-temperature flue gas contact surface of the converter is a membrane wall, wherein the outer cyclone cylinder and the inner cyclone cylinder are provided with vertical heated convection tube bundles. The utility model has the advantages of cyclone dust removal, recovery of converter gas heat, effective reduction of gas water content and gas volume, etc.
Description
Technical Field
The utility model belongs to the technical field of environmental protection and energy saving and boiler equipment, concretely relates to converter cyclone dust removal exhaust-heat boiler.
Background
In the oxygen blowing smelting process of the converter, high-temperature flue gas containing a large amount of carbon monoxide and iron-containing dust is generated. The temperature of the furnace outlet of the converter flue gas is usually about 1400 ℃ to 1600 ℃, and the dust concentration is 70-200g/m 3 。
The converter steelmaking of the main steelmaking process of steel enterprises generates gas containing carbon monoxide as a main component, a small amount of carbon dioxide and other trace components in the blowing process, and a large amount of iron oxide, metal iron particles and other fine particle solid dust are carried in the gas, so that the workshop environment is seriously influenced, and the atmosphere is polluted. Therefore, the technical level of the converter dust removal system is improved, and the recovery and utilization of converter gas and the recovery of flue gas waste heat have great significance for saving energy and reducing consumption in steelmaking, effectively controlling and reducing the emission of steelmaking atmospheric pollutants and reducing environmental pollution.
At present, the converter flue gas purification and recovery process mainly comprises a wet method, a dry method and a semi-dry method, wherein the three processes mainly recover converter gas, the sensible heat of the flue gas is not completely recovered, the sensible heat of the flue gas is recovered only by adopting a vaporization cooling mode, and then cooling and coarse dust removal are carried out by spraying water, so that the waste of the sensible heat of the flue gas at the temperature of 800-.
In the wet dust removal of the converter, the flue gas is cooled by spraying water and steam, and as a result, the flue gas of the converter contains a large amount of moisture, and equipment such as a flue gas pipeline, an electrostatic dust collector pole plate and shell, a gas pipeline, gas waste heat recovery and the like can be corroded.
The existing converter usually uses a cyclone dust collector as primary dust removal equipment, has single function and is mainly responsible for dust removal function, and a waste heat boiler is connected behind the dust collector and is used as a main energy-saving device. The occupied area of the equipment is large, the on-way resistance of the converter flue gas is large, and the equipment investment is large.
The traditional water tube boiler or fire tube boiler structure as the waste heat boiler has serious dust accumulation problem, and the equipment maintenance burden of the converter dust removal energy-saving system is increased.
The current converter gas dust removal technology comprises wet dust removal and dry dust removal. The wet dust removal has the defects of low dust removal efficiency, large system resistance loss, high operation cost, secondary pollution hidden danger in a large amount of sewage generated by dust removal and the like. The traditional dry dedusting system comprises a vaporization cooling flue, a steam generator and electrostatic dedusting, and overcomes the defects of wet dedusting, but also has the defects of explosion hidden danger and the like. Meanwhile, the waste heat, especially the converter gas output by the vaporization cooling flue at about 1000 ℃ or above 1000 ℃, cannot be effectively recovered no matter the wet dust removal or the dry dust removal. Therefore, a waste heat boiler capable of solving the problem of single function of a dust remover and the waste heat boiler in the production process of the converter is urgently needed.
SUMMERY OF THE UTILITY MODEL
The technical problem mainly solved is to provide the converter cyclone dust removal waste heat boiler which has the primary dust removal function of the converter and has the capacity of recovering the sensible heat of the converter by the waste heat boiler. Can be connected behind a vaporization flue and used for converter gas dust removal and waste heat recovery at the temperature of about 1000 ℃.
According to the utility model discloses a converter cyclone dust removal exhaust-heat boiler wherein includes: the device comprises a flue gas inlet connecting pipe 1, an outer cyclone barrel 2, an inner cyclone barrel 3, a conical ash falling barrel 4, a flue gas outlet connecting pipe 5, a top cover 6, a descending pipe 8, an ascending pipe 9 and a steam drum 7.
The flue gas inlet connecting pipe 1 is composed of a flue gas inlet connecting pipe membrane wall 24 and a flue gas inlet connecting pipe water inlet and outlet annular collecting tank 25, dust-containing high-temperature flue gas is connected in the tangential direction of a circular shell formed by the outer cyclone cylinder 2, and the top of the flue gas inlet connecting pipe 1 is close to the lower part of the top cover 6. After the high-temperature dust-containing flue gas enters from the flue gas inlet connecting pipe 1, the flue gas does a rotary motion from top to bottom along the membrane type wall 18 of the outer cyclone cylinder at a certain speed, dust particles are separated from the air flow and collected in the membrane type wall 18 of the outer cyclone cylinder due to the centrifugal force generated by the circular motion, and then the dust particles fall into the conical dust falling cylinder 4 and then the dust accumulating cylinder 37 by means of the gravity.
In order to strengthen the ash falling effect, a nitrogen gun can be arranged on the inner wall of the conical ash falling cylinder 4 to blow nitrogen to strongly drop ash. Or a gravity rapping device can be arranged on the outer wall of the conical ash falling cylinder to enable the conical ash falling cylinder 4 to vibrate and accelerate the ash falling on the wall surface.
The flue gas inlet connecting pipe enters and exits the water ring header 25, the water inlet of the water ring header can be a downcomer 8, and the water ring header can also be communicated with the outer cyclone cylinder lower ring header 16; the outlet water is a rising pipe 9 and can also be communicated with an upper ring header 13 of an external cyclone cylinder.
The outer wall of the ash deposition cylinder 37 is penetrated and arranged with a curved cooling water pipe. One side of the cooling water pipe is arranged in the wall surface and is contacted with high-temperature deposited dust, and the other side of the cooling water pipe is arranged outside and is contacted with air or an insulating layer.
The outer cyclone barrel 2 consists of an outer cyclone barrel membrane wall 18, an outer cyclone barrel upper ring collection box 14 and an outer cyclone barrel lower ring collection box 16.
Preferably, according to the converter cyclone dust removal waste heat boiler, an outer cyclone barrel convection tube bundle 19 is arranged between an outer cyclone barrel upper ring collection box 14 and an outer cyclone barrel lower ring collection box 16 of the outer cyclone barrel 2, and the outer cyclone barrel convection tube bundle 19 is arranged on the inner side of the outer cyclone barrel membrane wall 18 ring.
The inner cyclone barrel 3 consists of an inner cyclone barrel membrane wall 20, an inner cyclone barrel upper ring collection box 13 and an inner cyclone barrel lower ring collection box 15, and the inner cyclone barrel 3 and the outer cyclone barrel 2 are concentrically arranged by taking the ring collection box central axis as the center of a circle;
preferably, according to the converter cyclone dust removal waste heat boiler, an inner cyclone cylinder convection tube bundle 21 is arranged between an inner cyclone cylinder upper ring header 13 and an inner cyclone cylinder lower ring header 15 of the inner cyclone cylinder 3.
Preferably, according to the converter cyclone dust removal waste heat boiler, the inner cyclone cylinder convection tube bundles 21 are arranged on the inner side and the outer side of the ring of the inner cyclone cylinder membrane wall 20.
The conical ash falling barrel 4 consists of an ash falling bucket membrane wall 28, an outer cyclone barrel lower ring collection box 16 and an ash falling bucket lower ring collection box 29;
the water inlet of the ash falling hopper lower ring header 29 is a downcomer 8.
Preferably, according to the cyclone dust removal waste heat boiler, the outlet of the conical ash falling cylinder 5 is provided with the ash deposition cylinder 37, the gate valve 36 is arranged between the conical ash falling cylinder 5 and the ash deposition cylinder 37, the outlet of the ash deposition cylinder 37 is provided with the gate valve 36, and the side surface of the top end of the ash deposition cylinder 37 is provided with the nitrogen pipeline and the control valve 38.
The flue gas outlet connecting pipe 5 is arranged in the inner cyclone cylinder 3 and consists of a flue gas outlet connecting pipe membrane wall 22, a flue gas outlet connecting pipe inlet end ring header 32 and a flue gas outlet connecting pipe outlet end ring header 23; the inlet end ring header 32 of the smoke outlet connecting pipe takes the central shaft of the ring header as the center of a circle and is arranged concentrically with the inner cyclone cylinder 3;
a down pipe 8 is arranged between the steam drum 7 and the outer cyclone cylinder lower ring header 16; and a lower ring header communicating pipe 17 is arranged between the outer cyclone cylinder lower ring header 16 and the inner cyclone cylinder lower ring header 15. The descending pipe 8 and the ascending pipe 9 are both communicated with the steam drum 7, and the position of the water outlet of the ascending pipe 9 on the steam drum 7 is higher than the position of the water inlet of the descending pipe 8 on the steam drum 7.
According to the converter cyclone dust removal waste heat boiler, the top cover 6 consists of an outer cyclone cylinder upper ring header 14, a top cover outer ring membrane wall 26, an inner cyclone cylinder upper ring header 13, a top cover inner ring membrane wall 27 and a top cover inner ring header 34.
Preferably, the water pipe of the outer ring membrane wall 26 of the top cover is radially arranged between the upper ring header 14 of the outer cyclone cylinder and the upper ring header 13 of the inner cyclone cylinder; the top cover inner ring membrane wall 27 water pipe is radially arranged between the upper ring header 13 of the inner cyclone cylinder and the top cover inner ring header.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic front view of an upper inlet and lower outlet structure of a converter cyclone dust removal exhaust-heat boiler of the present invention;
FIG. 2 is a schematic top cross-sectional view of an upper inlet and lower outlet structure of a converter cyclone dust removal exhaust-heat boiler of the present invention;
FIG. 3 is a schematic top view of a top cover structure of a converter cyclone dust removal waste heat boiler of the present invention;
FIG. 4 is a schematic top view of a conical ash chute lower ring header and ash hopper membrane wall welding structure in a converter cyclone dust removal waste heat boiler of the present invention;
FIG. 5 is a schematic front view of a lower inlet and upper outlet structure of a cyclone dust removal exhaust-heat boiler of the converter;
fig. 6 is a schematic top-view cross-sectional view of a bottom-in and top-out structure of a converter cyclone dust removal exhaust-heat boiler of the present invention.
Wherein: 1. a flue gas inlet connecting pipe; 2. an outer cyclone barrel; 3. an inner cyclone barrel; 4. a conical ash falling cylinder; 5. a flue gas outlet connecting pipe; 6. a top cover; 7. a steam drum; 8. a down pipe; 9. a riser pipe; 10. a flue gas outlet end descending pipe; 11. a smoke outlet is connected with an ascending pipe at the inlet end; 12. an explosion venting port; 13. an inner cyclone cylinder and an upper ring header; 14. an outer cyclone barrel and an upper ring header; 15. the lower ring header of the inner cyclone cylinder; 16. the lower ring header of the external cyclone cylinder; 17. a lower ring header communicating pipe; 18. an outer cyclone cylinder membrane wall; 19. an outer cyclone barrel convection tube bundle; 20. an inner cyclone cylinder membrane wall; 21. the convection tube bank of the inner cyclone tube; 22. the smoke outlet is connected with the membrane wall; 23. the flue gas outlet is connected with an outlet end ring header; 24. the smoke inlet is connected with the membrane wall; 25. the flue gas inlet connecting pipe enters and exits the water ring header; 26. the outer ring of the top cover is a membrane wall; 27. the inner ring of the top cover is a membrane wall; 28. a hopper diaphragm wall; 29. A dust falling hopper lower ring collection box; 32. the flue gas outlet is connected with the inlet end ring header; 34. a header is arranged in the top cover; 35. the flue gas outlet is connected with the inlet end communicating pipe; 36. a gate valve; 37. an ash accumulation cylinder; 38. nitrogen pipeline and control valve.
Detailed Description
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the utility model discloses a converter cyclone dust removal exhaust-heat boiler, include: the device comprises a flue gas inlet connecting pipe 1, an outer cyclone barrel 2, an inner cyclone barrel 3, a conical ash falling barrel 4, a flue gas outlet connecting pipe 5, a top cover 6 and a steam drum 7.
The smoke of the high-temperature converter tangentially enters the outer cyclone barrel 2 from the smoke inlet connecting pipe 1, rotates at a high speed, separates heavier dust-removing particles from the smoke, enters the inner space of the inner cyclone barrel 2 where the inlet end of the smoke outlet connecting pipe 5 is located after the lower end edge of the inner cyclone barrel 3 is bent, and the smoke is bent by 180 degrees and enters the smoke outlet connecting pipe 5.
The high-temperature ash in the furnace is cooled by the ash falling bucket membrane wall 28 of the conical ash falling bucket 4 and is settled into the ash accumulating cylinder 37 below the connecting pipe of the ash falling bucket lower ring collecting box 29. A manual or pneumatic gate valve 36 is arranged between the interface of the lower ring header 29 of the ash hopper and the interface of the ash deposition cylinder, a gate valve 36 is also arranged at the outlet of the ash deposition cylinder, and a nitrogen pipeline and a control valve 38 are arranged at the upper part of the ash deposition cylinder. The utility model discloses open 37 entrance gate valves 36 of deposition section of thick bamboo during normal operating, close deposition section of thick bamboo export gate valve 36. Closing the nitrogen pipeline control valve; during ash removal, the gate valve 36 on the upper part of the ash deposition barrel 37 is closed, the nitrogen pipeline control valve on the top of the ash deposition barrel is opened to release nitrogen, the gate valve 37 below the ash deposition barrel is opened, nitrogen is introduced to eliminate vacuum in the ash deposition barrel, the ash deposition is guaranteed to be smoothly output from the ash deposition barrel, meanwhile, external air is prevented from entering the waste heat boiler, explosion accidents are prevented, and the coal gas quality and the coal gas transportation safety are guaranteed.
The soft water of the boiler enters the steam drum 7 after being deoxidized, the low-temperature water in the steam drum 7 enters the lower ring header 16 of the outer cyclone cylinder through the downcomer 8, meanwhile, a part of the low-temperature water enters the outlet end ring header 23 of the flue gas outlet connecting pipe through the downcomer 10 of the flue gas outlet end, and the other part of the low-temperature water enters the lower ring header 15 of the inner cyclone cylinder through the lower ring header communicating pipe 17.
The heating area of the waste heat boiler mainly comprises an outer cyclone cylinder 2, a top cover outer ring membrane wall 26, a top cover inner ring membrane wall 27, an ash hopper membrane wall 28, a flue gas inlet connecting pipe membrane wall 24, a flue gas outlet connecting pipe membrane wall 22 and the like, wherein the outer cyclone cylinder membrane wall 18 and the outer cyclone cylinder convection tube bundle 19 are positioned at the outer ring, the inner cyclone cylinder membrane wall 20 and the inner cyclone cylinder convection tube bundle 21 are positioned at the outer ring, the top cover outer ring membrane wall 26 and the top cover inner ring membrane wall 27 are positioned at the upper inlet and the lower outlet of the top cover 6, and the ash hopper membrane wall 28, the flue gas inlet connecting pipe membrane wall 24 and the flue gas outlet connecting pipe membrane wall 22 of the conical ash falling cylinder 4.
The high-temperature flue gas of the converter longitudinally or transversely scours the membrane walls and the convection tube bundles of all heating surfaces, and the water temperature in the boiler tubes of the heating surfaces is raised and the water density is reduced to flow upwards through radiation and convection heat transfer. Part of water in the lower cyclone cylinder collection box 16 rises through the outer cyclone cylinder membrane wall 18 pipe and the outer cyclone cylinder convection tube bundle 19 and is collected in the upper cyclone cylinder collection box 14; the water in the lower ring header 15 of the inner cyclone cylinder rises through the membrane type wall 20 pipe of the inner cyclone cylinder and the convection tube bundle 21 of the inner cyclone cylinder and is collected in the upper ring header 13 of the inner cyclone cylinder; the water in the fume outlet connecting pipe outlet end ring header tank 23 rises to the fume outlet connecting pipe inlet end ring header tank 32 through the fume outlet connecting pipe membrane type wall 22 pipe, and then enters the top cover inner ring header tank 34 through the fume outlet connecting pipe inlet end ascending pipe.
The top cover 6 is composed of a top cover outer ring membrane wall 26, a top cover inner ring membrane wall, an outer cyclone cylinder upper ring header 14, an inner cyclone cylinder upper ring header 13, a top cover inner ring header 34 and the like which are communicated with the top cover outer ring membrane wall and the top cover inner ring membrane wall. After being heated in the top cover 6, the high-temperature steam-water mixture enters the steam drum 7 through the ascending pipe 9, and the circulation is repeated in a natural way. Saturated water in the steam drum 7 is vaporized and concentrated in the steam drum gas phase space, and steam is provided through a steam outlet connecting pipe of the steam drum 7.
Example 2
As shown in fig. 5, the utility model discloses a converter cyclone dust removal exhaust-heat boiler, include: the device comprises a flue gas inlet connecting pipe 1, an outer cyclone barrel 2, an inner cyclone barrel 3, a conical ash falling barrel 4, a flue gas outlet connecting pipe 5, a top cover 6 and a steam drum 7.
The flue gas of the high-temperature converter tangentially enters the outer cyclone barrel 2 from the flue gas inlet connecting pipe 1 to rotate at a high speed, heavier dust-removing particles in the flue gas of the high-temperature converter are separated from the flue gas, the flue gas enters the inner space of the inner cyclone barrel 2 where the inlet end of the flue gas outlet connecting pipe 5 is located after the lower end edge of the inner cyclone barrel 3 is bent, and the flue gas is bent by 180 degrees and enters the flue gas outlet connecting pipe 5.
The high-temperature ash in the furnace is cooled by the ash falling bucket membrane wall 28 of the conical ash falling bucket 4 and is settled into the ash accumulating cylinder 37 below the connecting pipe of the ash falling bucket lower ring collecting box 29. A manual or pneumatic gate valve 36 is arranged between the interface of the lower ring header 29 of the ash hopper and the interface of the ash deposition cylinder, a gate valve 36 is also arranged at the outlet of the ash deposition cylinder, and a nitrogen pipeline and a control valve 38 are arranged at the upper part of the ash deposition cylinder. The utility model discloses open 37 entrance gate valves 36 of deposition section of thick bamboo during normal operating, close deposition section of thick bamboo export gate valve 36. Closing the nitrogen pipeline control valve; during ash removal, the gate valve 36 on the upper part of the ash deposition barrel 37 is closed, the nitrogen pipeline control valve on the top of the ash deposition barrel is opened to release nitrogen, the gate valve 37 below the ash deposition barrel is opened, nitrogen is introduced to eliminate vacuum in the ash deposition barrel, the ash deposition is guaranteed to be smoothly output from the ash deposition barrel, meanwhile, external air is prevented from entering the waste heat boiler, explosion accidents are prevented, and the coal gas quality and the coal gas flue gas transportation safety are guaranteed.
The boiler soft water enters the steam drum 7 after being deoxidized, low-temperature water in the steam drum 7 enters the outer cyclone cylinder lower ring header 16 through the downcomer 8, the other part of the low-temperature water enters the inner cyclone cylinder lower ring header 15 through the lower ring header communicating pipe 17, and a flue gas outlet connecting pipe inlet end communicating pipe 35 is arranged between the inner cyclone cylinder lower ring header 15 and the flue gas outlet connecting pipe inlet end ring header 32.
The heating area of the waste heat boiler mainly comprises an outer cyclone cylinder 2, an outer cyclone cylinder membrane wall 18 and an outer cyclone cylinder convection tube bundle 19 which are positioned at the outer ring, an inner cyclone cylinder membrane wall 20 and an inner cyclone cylinder convection tube bundle 21, a top cover outer ring membrane wall 26 and a top cover inner ring membrane wall 27 of a top cover 6, an ash hopper membrane wall 28 and a smoke inlet connecting pipe membrane wall 24 of a conical ash falling cylinder 4, a smoke outlet connecting pipe membrane wall 22 and the like.
The high-temperature flue gas of the converter longitudinally or transversely scours the membrane walls and the convection tube bundles of all the heating surfaces, and the water temperature in the boiler tubes of the heating surfaces is raised and the water density is reduced to flow upwards through radiation and convection heat transfer. Part of water in the outer cyclone cylinder lower ring header 16 rises through the outer cyclone cylinder membrane wall 18 pipe and the outer cyclone cylinder convection tube bundle 19 and is concentrated in the outer cyclone cylinder upper ring header 14; the water in the lower ring collection box 15 of the inner cyclone cylinder rises through the membrane type wall 20 pipe of the inner cyclone cylinder and the convection tube bundle 21 of the inner cyclone cylinder and is collected in the upper ring collection box 13 of the inner cyclone cylinder; the water in the flue gas outlet connecting pipe inlet end ring header 32 rises to the top cover inner ring header 34 through the flue gas outlet connecting pipe membrane type wall 22 pipe, and then enters the flue gas outlet connecting pipe outlet end ring header 23 through the flue gas outlet connecting pipe upper section membrane type wall.
The top cover 6 comprises a top cover outer ring membrane wall 26, a top cover inner ring membrane wall 27, an outer cyclone cylinder upper ring header 14, an inner cyclone cylinder upper ring header 13, a top cover inner ring header 34 and the like which are communicated with the top cover outer ring membrane wall and the top cover inner ring membrane wall. The high-temperature steam-water mixture in the top cover 33 enters the end ring collecting box at the outlet of the smoke outlet connecting pipe through the upper section membrane wall of the smoke outlet connecting pipe 5 and then enters the steam drum 7 through the ascending pipe 9, and the circulation is repeated and natural. Saturated water in the steam drum 7 is vaporized and concentrated in the steam drum gas phase space and provides steam to the outside through a steam outlet connecting pipe of the steam drum 7.
The utility model has the advantages of it is following and beneficial effect:
the utility model provides a dust remover and exhaust-heat boiler function singleness's problem in the converter production process, concentrate cyclone and exhaust-heat boiler function in an organic whole, be used for the waste heat energy-saving who removes dust of converter dry process effectively to reduce coal gas moisture content and volume, retrieve the converter dust and be dry particle, utilize behind the metal recovery of being convenient for and the dust.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A converter cyclone dust removal exhaust-heat boiler is characterized in that: the device comprises a flue gas inlet connecting pipe (1), an outer cyclone barrel (2), an inner cyclone barrel (3), a conical ash falling barrel (4), a flue gas outlet connecting pipe (5), a top cover (6), a down pipe (8), an ascending pipe (9) and a steam drum (7); the flue gas inlet connecting pipe (1) consists of a flue gas inlet connecting pipe membrane wall (24) and a flue gas inlet connecting pipe water inlet and outlet ring header (25), dust-containing high-temperature flue gas is connected in along the tangential direction of a circular shell formed by the outer cyclone cylinder (2), and the top of the flue gas inlet connecting pipe (1) is close to the lower part of the top cover (6); the outer cyclone cylinder (2) consists of an outer cyclone cylinder membrane type wall (18), an outer cyclone cylinder upper ring collection box (14) and an outer cyclone cylinder lower ring collection box (16); the inner cyclone cylinder (3) consists of an inner cyclone cylinder membrane type wall (20), an inner cyclone cylinder upper ring collection box (13) and an inner cyclone cylinder lower ring collection box (15), and the inner cyclone cylinder (3) and the outer cyclone cylinder (2) are concentrically arranged by taking the ring collection box central shaft as the center of a circle; the conical ash falling cylinder (4) consists of an ash falling bucket membrane wall (28), an outer cyclone cylinder lower ring collection box (16) and an ash falling bucket lower ring collection box (29); the smoke outlet connecting pipe (5) is arranged in the inner cyclone cylinder (3) and consists of a smoke outlet connecting pipe membrane type wall (22), a smoke outlet connecting pipe inlet end ring collecting box (32) and a smoke outlet connecting pipe outlet end ring collecting box (23); the inlet end ring collection box (32) of the smoke outlet connecting pipe takes the central shaft of the ring collection box as the circle center and is concentrically arranged with the inner cyclone cylinder (3); a down pipe (8) is arranged between the steam drum (7) and the lower ring header (16) of the outer cyclone cylinder; a lower ring header communicating pipe (17) is arranged between the outer cyclone cylinder lower ring header (16) and the inner cyclone cylinder lower ring header (15), the downcomer (8) and the riser (9) are both communicated with the steam drum (7), and the position of a water outlet of the riser (9) on the steam drum (7) is higher than the position of a water inlet of the downcomer (8) on the steam drum (7).
2. The converter cyclone dust removal waste heat boiler as claimed in claim 1, characterized in that: an outer cyclone barrel convection tube bundle (19) is arranged between an outer cyclone barrel upper ring collection box (14) and an outer cyclone barrel lower ring collection box (16) of the outer cyclone barrel (2), and the outer cyclone barrel convection tube bundle (19) is arranged on the inner side of the outer cyclone barrel membrane wall (18) ring.
3. The converter cyclone dust removal waste heat boiler of claim 1, which is characterized in that: an inner cyclone barrel convection tube bundle (21) is arranged between an inner cyclone barrel upper ring header (13) and an inner cyclone barrel lower ring header (15) of the inner cyclone barrel (3).
4. The converter cyclone dust removal waste heat boiler as claimed in claim 1, characterized in that: the inner cyclone cylinder convection bank (21) is arranged inside and outside the ring of the inner cyclone cylinder membrane wall (20).
5. The converter cyclone dust removal waste heat boiler as claimed in claim 1, characterized in that: the top cover (6) consists of an outer cyclone cylinder upper ring header (14), a top cover outer ring membrane wall (26), an inner cyclone cylinder upper ring header (13), a top cover inner ring membrane wall (27) and a top cover inner ring header (34), and a water pipe of the top cover outer ring membrane wall (26) is radially arranged between the outer cyclone cylinder upper ring header (14) and the inner cyclone cylinder upper ring header (13); and a water pipe of the top cover inner ring membrane wall (27) is radially arranged between the upper ring header (13) of the inner cyclone and the top cover inner ring header.
6. The converter cyclone dust removal waste heat boiler as claimed in claim 1, characterized in that: an ash deposition cylinder (37) is arranged at the outlet of the conical ash falling cylinder (4), a gate valve (36) is arranged between the conical ash falling cylinder (4) and the ash deposition cylinder (37), the gate valve (36) is arranged at the outlet of the ash deposition cylinder (37), and a nitrogen pipeline and a control valve (38) are arranged on the side surface of the top end of the ash deposition cylinder (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123366860.1U CN217403166U (en) | 2021-12-30 | 2021-12-30 | Converter cyclone dust removal exhaust-heat boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123366860.1U CN217403166U (en) | 2021-12-30 | 2021-12-30 | Converter cyclone dust removal exhaust-heat boiler |
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| CN217403166U true CN217403166U (en) | 2022-09-09 |
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| CN202123366860.1U Active CN217403166U (en) | 2021-12-30 | 2021-12-30 | Converter cyclone dust removal exhaust-heat boiler |
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